luoyang longda bearing is a specialized manufacturer of various kinds of cylindrical roller bearing,cylindrical roller bearings have exceptionally low friction torque characteristics that make them suitable for high speed operation. cylindrical roller bearing include: Single row cylindrical roller bearings(NU221E.NJ322E.N1026.NU2328.NU1034.NJ338.N2340.NU1064.NU20/710E.N18/1900) Double row cylindrical roller bearings(NNU4934.NN3038.NN3052K.NNU4148K.NN3044.NNU4160.NN3076.NNU41/500KNN49/600.NNU40/750.NN49/1320) Four row cylindrical roller bearings.(FC202780.FC243692.SFC3050156.FC5068170) if you have any needs. welcome here. Tony Luoyang longda bearing CO.,LTD Tel: 86-379-64985493 Website: www.ldb-bearing.com Fax: 86-379-64985493/4924823 E-MAIL:ldb@ldb-bearing.com MSN:ldbearing8@hotmail.com Skype:ldb-bearing